Do you ever start to miss some random people?

Like, really random people, like that guy you used to sit next to in history class. Even though you two were not really friends, just talking once in a while and his stupid jokes mad you feel used to lighten your day.

Or that girl that you didn't even knew that well, but was the most supportive person you ever met, always complimenting other girls, making them shine.

Even that boy from your friend's parties, who you barely saw twice, but whose tinkling laugh you remember so clearly in your head.

What do you do then? What are you supposed to do when it happens?